Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hydraulic hybrid powertrain system

a hybrid powertrain and hydro-hydraulic technology, applied in hybrid vehicles, fluid couplings, couplings, etc., can solve the problems of many efficiency issues regarding the operation and control of the engine, and disadvantageous high weight of the system

Inactive Publication Date: 2006-08-24
LIMO REID INC
View PDF47 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about a hydraulic hybrid powertrain system that has a power plant, a drive motor, and a mode selection means. The system can select from different modes of operation for the drive motor, including drive, neutral, reverse, and park modes. The control means can manage the operation of the drive motor in these modes. The system also has a selectively actuated brake means and a check valve bridge circuit for connecting the drive motor to a low pressure fluid source when the brakes are applied. The technical effect of this invention is to provide a flexible and efficient hydraulic hybrid powertrain system that can easily switch between different modes of operation for the drive motor.

Problems solved by technology

These systems are disadvantageously high in weight because of the necessary duplication of parts.
While the attractiveness of such a hydraulic hybrid powertrain has been recognized, there remain many efficiency issues regarding the operation and control of the engine with respect to the hydraulic drive motor.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hydraulic hybrid powertrain system
  • Hydraulic hybrid powertrain system
  • Hydraulic hybrid powertrain system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The following patent applications are incorporated herein by reference: U.S. patent application Ser. No. 60 / 655,221 filed on Feb. 22, 2005; U.S. patent application Ser. No. 11 / 101,837 filed on Apr. 8, 2005.

[0018] Referring now to FIG. 1a, a hydraulic hybrid powertrain system in accordance with the present invention is indicated generally at 10. The powertrain system 10 may be utilized in a variety of installations, such as, but not limited to, an automotive vehicle, a boat, a submarine, a helicopter, or the like as will be appreciated by those skilled in the art, but for clarity will be referred to as if installed in an automotive vehicle in the following description of the present invention. The powertrain system 10 includes a power plant section 11, a mode selector module 43, a control section 59, and a power delivery section 76.

[0019] The power plant section 11 of the powertrain system 10 includes an engine 12 in communication with a fuel source 14. The engine 12 may be ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A hydraulic hybrid powertrain system includes a power plant generating a high pressure fluid at an output, at least one drive motor responsive to the high pressure fluid for generating rotary motion at an output, and a mode selection means connected to the power plant output and the drive motor for selecting a mode of operation from a plurality of drive motor modes of operation including at least two of a drive mode, a neutral mode, a reverse mode and a park mode. The system includes a control means connected to the power plant and the drive motor for controlling operation of the drive motor in the plurality of modes of operation, a selectively actuated brake means for interrupting high pressure fluid flow to the drive motor, and a check valve bridge circuit for connecting the drive motor to a low pressure fluid source when the brake means is actuated.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This application is a continuation-in-part of U.S. application Ser. No. 11 / 101,837 filed on Apr. 8, 2005. [0002] This application claims priority from the provisional application Ser. No. 60 / 655,221 filed on Feb. 22, 2005.BACKGROUND OF THE INVENTION [0003] The present invention relates generally to vehicle powertrain systems and, in particular, to a hydraulic hybrid powertrain system. [0004] So-called hybrid powertrains, such as for automotive vehicles, generally refer to a powertrain wherein an internal combustion engine is utilized in combination with an auxiliary motor, such as electric motor or a hydraulic motor, to drive the vehicle. Hybrid powertrain systems known as parallel hybrids include a typical mechanical drivetrain (coupled to the internal combustion engine) along with the auxiliary drivetrain (coupled to the auxiliary motor). These systems are disadvantageously high in weight because of the necessary duplication of parts. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): F16D31/02
CPCB60K6/12F04C2/102F04C2/18F04C11/001F04C14/185F16H61/4061Y02T10/6208B60W30/18127F16H61/4157B60W2540/12Y02T10/62
Inventor O'BRIEN, JAMES A. II
Owner LIMO REID INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com